Definition: You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.
Input: Mike picked 8 pears and Jason picked 7 pears from the pear tree.Fred picked 6 apples from the apple tree. How many pears werepicked in total?

15.0